Elastic fabric.



W. KOPS.

ELASTIC FABRIC.

APPLICATION FILED MAY 7, 1912.

Patented Aug. 12, 1913.

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WALDEMAR KOPS, OF

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NEW YORK, N. Y., ASSIGNOR TO KOPS BROS, OF NEW YORK,

N. Y., A FIRM.

ELASTIC FABRIC.

To all whom it may concern:

Be it known that I, W'ALDEMAR Kors, a citizen of the United States, residing in the borough of lvlanhattan, city, county, and State of New York, have invented a certain new and useful Improvement in Elastic Fabrics, of which the following is a specification.

My invention relates to elastic fabrics of parallel sided form, having selvage edges and woven of indefinite length, with the object of providing an elastic fabric suitable for use between parts under tension in the gores of corsets, slippers, &c., and wherever such forms of elastic fabric are useful in the arts and manufactures.

In the article of my invention, I provide the elastic portions with borders or edges of inelastic fabric, forming sewing sections, and in the continuous fiat strips of elastic webbing, as woven, the inelastic sewing sections are arranged intermediate the elastic sections, and the respective sections with reference to the length of elastic fabric are arranged transversely thereof, or in other words, preferably in diagonal or transverse and reversed positions, adapting the strip to be out up through the inelastic sewing sections into shaped pieces of suitable configuration for filling the gores of corsets, slippers, &c., and this, regardless of the width of the elastic fabric or the size of the suitable configurations into which the same is cut up. In each of these parts, the elastic strands run parallel with the warp threads, and in the sewing sections, the elastic strands and usual warp threads are bound together more firmly, closely and tightly than in the elastic sections, so that a slipping of the elastic strands in the receiving channels is therefore prevented.

In the elastic webbing of my present invention, the weft or filling thread is interlaced with the cotton or other warp and elastic warp strands more closely in the nonelastic than in the elastic sections.

Particularly speaking, in the webbing of my present invention, the weft or filling thread does not always extend all the way across the elastic webbing, but is woven back and forth principally through the inelastic portions of the webbing, or in other words, the portions that are to be made inelastic, and, in contra-distinction to the elastic webhing, shown and described in my applica- Specification of Letters Patent.

Application filed May 7, 1912.

Patented Aug. 12,1913.

Serial No. 695,632.

tion for Letters Patent, Serial No. 650,958, filed September 23, 1911, I do not, in the present application, use additional weft or filling threads, but simply arrange the usual weft thread, so that there is more of it in the inelastic than in the elastic sections.

in the drawing. Figure 1 represents a plan of a length of elastic fabric, according to my invention. Fig. 2 is a cross section at about the broken line 00 00 of Fig. 1. Fig. 3 is a cross section at about the broken line y of Fig. 1, and Fig. -it is a cross section at about the broken line 2 z of Fig. 1, all of the cross sections looking in the direction of the arrows indicated.

Similar letters and numerals of reference indicate similar parts in the several figures.

In the drawing, 2 and 3 represent the sides or s-elvage of the elastic fabric strip. The inelastic or sewing sections are represented at a, a a a and a and the elastic sections are represented at 6, 6 .71 b and 6".

In the fabric of my invention, the warp threads of cotton or other suitable material extend lengthwise of the elastic fabric and parallel to the lines of the elastic warp threads and between the same, and these elastic strands also preferably extend from selvage to selvage.

The elastic strands are represented at 4, in heavier lines and in contradistinction to the warp threads of cotton or similar m..- terial, but it is to be understood that in any piece of webbing I do not limit my invention to the number of elastic strands or warps which extend between the selvage edges, nor to the number of cotton or other suitable material warp threads between the respective elastic strands or elastic warp.

Referring particularly to Fig. 1, the weft thread 6 is laid back and forth through the strip of webbing, and is largely confined to the inelastic or sewing sections, and only occasionally extends across the full width of the fabric and through the elastic sections suflioient to effectually bind the cotton and elastic warps together, hence the weaving in the inelastic or sewing sections is closer and firmer to a pronounced degree than it is in the elastic sections. In this form of my invention, the rubber strands are all at the same tension and all the warp threads which run parallel thereto are drawn taut, and the weft thread, as illustrated, is only carried part way across in the majority of cases, and

as it extends part way across, its position in the weaving is progressively shifted so that in passing through from one side to the other, it forms a diagonal compact sewing section, first in one direction and then in the opposite direction, there being between the diagonal portions edge portions uniting the same, which are also inelastic and in which the weft thread 6 is always present in a close woven relation.

In Fig. 1, the diverging lines 7 indicate the lines of severance, upon which the length of webbing is cut up into several pieces, each of which forms a gore section or similar part, and when so cut up, each portion has opposite inelastic edges or sewing sections, between which is an elastic section.

Figs. 2, 3 and 4t made approximately at the broken lines 90, g and 2 indicated in Fig. 1, have bracket lines I and E associated therewith, I indicating the inelastic portions and E the elastic portions, from which it will be at once apparent that in the inelastic 0r sewing sections, the weft thread passes over and under each one of the cotton or other suitable material warps, and the clastic strands or elastic warps, while in the elastic sections E, the said weft thread is caused to pass over the cotton or other suitable material warps and elastic warps in groups of two, over and under the threads in groups of two, hence the weft thread in the elastic sections only binds the cotton and elastic wefts to approximately one-half the extent that it does in the inelastic sections, from which it will be readily perceived that in the elastic sections the elastic strands are quite free to contract and elongate under non-use or use, while in the inelastic sections the elastic strands are held tightly against contraction and expansion.

The extent to which the weft thread is passed back and forth through the elastic sections to bind the warps together and maintain the integrity of the webbing is largely a matter of good judgment according to the kind of webbing and the uses to which it is to be put, but in all cases the weft thread is largely confined to the inelastic or sewing sections.

I claim as my invention:

1. An elastic fabric comprising elastic and inelastic warps and an inelastic weft, these parts alone forming the fabric in which the said inelastic weft extends progressively varying distances across the fabric so as to provide elastic and inelastic sections in the same.

2. An elastic fabric comprising elastic and inelastic warps and an inelastic weft, these parts alone forming the body of the fabric in which the said inelastic weft extends progressively varying distances across the fabric so as to provide inelastic sect-ions running diagonally from one side of the fabric to the other throughout its length, and elastic sections intermediate of the said inelastic sections.

3. A flat length elastic fabric adapted to be severed into suitably shaped sections, each with intermediate elastic and opposite marginal inelastic or sewing sections and in which the warp threads are drawn taut and the elastic threads are under tension, and also in which the weft thread extends occasionally entirely across the fabric strip from selvage to. selvage, and also extends progressively varying distances across the fabric between the parts in which it extends .entirely across the fabric to provide transversely extending inelastic sections and intermediate elastic sect-ions.

Signed by me this 3rd day of May, 1912.

WVALDEMAR KQPS.

Witnesses:

BERTHA M. ALLEN, J. B. Ln BLANO.

Copies of this patent may be obtained for five cents each, by addressing the Gommissioner of Patents,

Washington, D. G." 

